2184 lines
67 KiB
Perl
2184 lines
67 KiB
Perl
package DB;
|
|
|
|
# Debugger for Perl 5.00x; perl5db.pl patch level:
|
|
|
|
$VERSION = 1.0401;
|
|
$header = "perl5db.pl version $VERSION";
|
|
|
|
# Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich)
|
|
# Latest version available: ftp://ftp.math.ohio-state.edu/pub/users/ilya/perl
|
|
|
|
# modified Perl debugger, to be run from Emacs in perldb-mode
|
|
# Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990
|
|
# Johan Vromans -- upgrade to 4.0 pl 10
|
|
# Ilya Zakharevich -- patches after 5.001 (and some before ;-)
|
|
|
|
#
|
|
# This file is automatically included if you do perl -d.
|
|
# It's probably not useful to include this yourself.
|
|
#
|
|
# Perl supplies the values for %sub. It effectively inserts
|
|
# a &DB'DB(); in front of every place that can have a
|
|
# breakpoint. Instead of a subroutine call it calls &DB::sub with
|
|
# $DB::sub being the called subroutine. It also inserts a BEGIN
|
|
# {require 'perl5db.pl'} before the first line.
|
|
#
|
|
# After each `require'd file is compiled, but before it is executed, a
|
|
# call to DB::postponed($main::{'_<'.$filename}) is emulated. Here the
|
|
# $filename is the expanded name of the `require'd file (as found as
|
|
# value of %INC).
|
|
#
|
|
# Additional services from Perl interpreter:
|
|
#
|
|
# if caller() is called from the package DB, it provides some
|
|
# additional data.
|
|
#
|
|
# The array @{$main::{'_<'.$filename} is the line-by-line contents of
|
|
# $filename.
|
|
#
|
|
# The hash %{'_<'.$filename} contains breakpoints and action (it is
|
|
# keyed by line number), and individual entries are settable (as
|
|
# opposed to the whole hash). Only true/false is important to the
|
|
# interpreter, though the values used by perl5db.pl have the form
|
|
# "$break_condition\0$action". Values are magical in numeric context.
|
|
#
|
|
# The scalar ${'_<'.$filename} contains "_<$filename".
|
|
#
|
|
# Note that no subroutine call is possible until &DB::sub is defined
|
|
# (for subroutines defined outside of the package DB). In fact the same is
|
|
# true if $deep is not defined.
|
|
#
|
|
# $Log: perldb.pl,v $
|
|
|
|
#
|
|
# At start reads $rcfile that may set important options. This file
|
|
# may define a subroutine &afterinit that will be executed after the
|
|
# debugger is initialized.
|
|
#
|
|
# After $rcfile is read reads environment variable PERLDB_OPTS and parses
|
|
# it as a rest of `O ...' line in debugger prompt.
|
|
#
|
|
# The options that can be specified only at startup:
|
|
# [To set in $rcfile, call &parse_options("optionName=new_value").]
|
|
#
|
|
# TTY - the TTY to use for debugging i/o.
|
|
#
|
|
# noTTY - if set, goes in NonStop mode. On interrupt if TTY is not set
|
|
# uses the value of noTTY or "/tmp/perldbtty$$" to find TTY using
|
|
# Term::Rendezvous. Current variant is to have the name of TTY in this
|
|
# file.
|
|
#
|
|
# ReadLine - If false, dummy ReadLine is used, so you can debug
|
|
# ReadLine applications.
|
|
#
|
|
# NonStop - if true, no i/o is performed until interrupt.
|
|
#
|
|
# LineInfo - file or pipe to print line number info to. If it is a
|
|
# pipe, a short "emacs like" message is used.
|
|
#
|
|
# Example $rcfile: (delete leading hashes!)
|
|
#
|
|
# &parse_options("NonStop=1 LineInfo=db.out");
|
|
# sub afterinit { $trace = 1; }
|
|
#
|
|
# The script will run without human intervention, putting trace
|
|
# information into db.out. (If you interrupt it, you would better
|
|
# reset LineInfo to something "interactive"!)
|
|
#
|
|
##################################################################
|
|
# Changelog:
|
|
|
|
# A lot of things changed after 0.94. First of all, core now informs
|
|
# debugger about entry into XSUBs, overloaded operators, tied operations,
|
|
# BEGIN and END. Handy with `O f=2'.
|
|
|
|
# This can make debugger a little bit too verbose, please be patient
|
|
# and report your problems promptly.
|
|
|
|
# Now the option frame has 3 values: 0,1,2.
|
|
|
|
# Note that if DESTROY returns a reference to the object (or object),
|
|
# the deletion of data may be postponed until the next function call,
|
|
# due to the need to examine the return value.
|
|
|
|
# Changes: 0.95: `v' command shows versions.
|
|
# Changes: 0.96: `v' command shows version of readline.
|
|
# primitive completion works (dynamic variables, subs for `b' and `l',
|
|
# options). Can `p %var'
|
|
# Better help (`h <' now works). New commands <<, >>, {, {{.
|
|
# {dump|print}_trace() coded (to be able to do it from <<cmd).
|
|
# `c sub' documented.
|
|
# At last enough magic combined to stop after the end of debuggee.
|
|
# !! should work now (thanks to Emacs bracket matching an extra
|
|
# `]' in a regexp is caught).
|
|
# `L', `D' and `A' span files now (as documented).
|
|
# Breakpoints in `require'd code are possible (used in `R').
|
|
# Some additional words on internal work of debugger.
|
|
# `b load filename' implemented.
|
|
# `b postpone subr' implemented.
|
|
# now only `q' exits debugger (overwriteable on $inhibit_exit).
|
|
# When restarting debugger breakpoints/actions persist.
|
|
# Buglet: When restarting debugger only one breakpoint/action per
|
|
# autoloaded function persists.
|
|
# Changes: 0.97: NonStop will not stop in at_exit().
|
|
# Option AutoTrace implemented.
|
|
# Trace printed differently if frames are printed too.
|
|
# new `inhibitExit' option.
|
|
# printing of a very long statement interruptible.
|
|
# Changes: 0.98: New command `m' for printing possible methods
|
|
# 'l -' is a synonim for `-'.
|
|
# Cosmetic bugs in printing stack trace.
|
|
# `frame' & 8 to print "expanded args" in stack trace.
|
|
# Can list/break in imported subs.
|
|
# new `maxTraceLen' option.
|
|
# frame & 4 and frame & 8 granted.
|
|
# new command `m'
|
|
# nonstoppable lines do not have `:' near the line number.
|
|
# `b compile subname' implemented.
|
|
# Will not use $` any more.
|
|
# `-' behaves sane now.
|
|
# Changes: 0.99: Completion for `f', `m'.
|
|
# `m' will remove duplicate names instead of duplicate functions.
|
|
# `b load' strips trailing whitespace.
|
|
# completion ignores leading `|'; takes into account current package
|
|
# when completing a subroutine name (same for `l').
|
|
|
|
####################################################################
|
|
|
|
# Needed for the statement after exec():
|
|
|
|
BEGIN { $ini_warn = $^W; $^W = 0 } # Switch compilation warnings off until another BEGIN.
|
|
local($^W) = 0; # Switch run-time warnings off during init.
|
|
warn ( # Do not ;-)
|
|
$dumpvar::hashDepth,
|
|
$dumpvar::arrayDepth,
|
|
$dumpvar::dumpDBFiles,
|
|
$dumpvar::dumpPackages,
|
|
$dumpvar::quoteHighBit,
|
|
$dumpvar::printUndef,
|
|
$dumpvar::globPrint,
|
|
$dumpvar::usageOnly,
|
|
@ARGS,
|
|
$Carp::CarpLevel,
|
|
$panic,
|
|
$second_time,
|
|
) if 0;
|
|
|
|
# Command-line + PERLLIB:
|
|
@ini_INC = @INC;
|
|
|
|
# $prevwarn = $prevdie = $prevbus = $prevsegv = ''; # Does not help?!
|
|
|
|
$trace = $signal = $single = 0; # Uninitialized warning suppression
|
|
# (local $^W cannot help - other packages!).
|
|
$inhibit_exit = $option{PrintRet} = 1;
|
|
|
|
@options = qw(hashDepth arrayDepth DumpDBFiles DumpPackages DumpReused
|
|
compactDump veryCompact quote HighBit undefPrint
|
|
globPrint PrintRet UsageOnly frame AutoTrace
|
|
TTY noTTY ReadLine NonStop LineInfo maxTraceLen
|
|
recallCommand ShellBang pager tkRunning ornaments
|
|
signalLevel warnLevel dieLevel inhibit_exit
|
|
ImmediateStop bareStringify);
|
|
|
|
%optionVars = (
|
|
hashDepth => \$dumpvar::hashDepth,
|
|
arrayDepth => \$dumpvar::arrayDepth,
|
|
DumpDBFiles => \$dumpvar::dumpDBFiles,
|
|
DumpPackages => \$dumpvar::dumpPackages,
|
|
DumpReused => \$dumpvar::dumpReused,
|
|
HighBit => \$dumpvar::quoteHighBit,
|
|
undefPrint => \$dumpvar::printUndef,
|
|
globPrint => \$dumpvar::globPrint,
|
|
UsageOnly => \$dumpvar::usageOnly,
|
|
bareStringify => \$dumpvar::bareStringify,
|
|
frame => \$frame,
|
|
AutoTrace => \$trace,
|
|
inhibit_exit => \$inhibit_exit,
|
|
maxTraceLen => \$maxtrace,
|
|
ImmediateStop => \$ImmediateStop,
|
|
);
|
|
|
|
%optionAction = (
|
|
compactDump => \&dumpvar::compactDump,
|
|
veryCompact => \&dumpvar::veryCompact,
|
|
quote => \&dumpvar::quote,
|
|
TTY => \&TTY,
|
|
noTTY => \&noTTY,
|
|
ReadLine => \&ReadLine,
|
|
NonStop => \&NonStop,
|
|
LineInfo => \&LineInfo,
|
|
recallCommand => \&recallCommand,
|
|
ShellBang => \&shellBang,
|
|
pager => \&pager,
|
|
signalLevel => \&signalLevel,
|
|
warnLevel => \&warnLevel,
|
|
dieLevel => \&dieLevel,
|
|
tkRunning => \&tkRunning,
|
|
ornaments => \&ornaments,
|
|
);
|
|
|
|
%optionRequire = (
|
|
compactDump => 'dumpvar.pl',
|
|
veryCompact => 'dumpvar.pl',
|
|
quote => 'dumpvar.pl',
|
|
);
|
|
|
|
# These guys may be defined in $ENV{PERL5DB} :
|
|
$rl = 1 unless defined $rl;
|
|
$warnLevel = 1 unless defined $warnLevel;
|
|
$dieLevel = 1 unless defined $dieLevel;
|
|
$signalLevel = 1 unless defined $signalLevel;
|
|
$pre = [] unless defined $pre;
|
|
$post = [] unless defined $post;
|
|
$pretype = [] unless defined $pretype;
|
|
warnLevel($warnLevel);
|
|
dieLevel($dieLevel);
|
|
signalLevel($signalLevel);
|
|
&pager(defined($ENV{PAGER}) ? $ENV{PAGER} : "|more") unless defined $pager;
|
|
&recallCommand("!") unless defined $prc;
|
|
&shellBang("!") unless defined $psh;
|
|
$maxtrace = 400 unless defined $maxtrace;
|
|
|
|
if (-e "/dev/tty") {
|
|
$rcfile=".perldb";
|
|
} else {
|
|
$rcfile="perldb.ini";
|
|
}
|
|
|
|
if (-f $rcfile) {
|
|
do "./$rcfile";
|
|
} elsif (defined $ENV{LOGDIR} and -f "$ENV{LOGDIR}/$rcfile") {
|
|
do "$ENV{LOGDIR}/$rcfile";
|
|
} elsif (defined $ENV{HOME} and -f "$ENV{HOME}/$rcfile") {
|
|
do "$ENV{HOME}/$rcfile";
|
|
}
|
|
|
|
if (defined $ENV{PERLDB_OPTS}) {
|
|
parse_options($ENV{PERLDB_OPTS});
|
|
}
|
|
|
|
if (exists $ENV{PERLDB_RESTART}) {
|
|
delete $ENV{PERLDB_RESTART};
|
|
# $restart = 1;
|
|
@hist = get_list('PERLDB_HIST');
|
|
%break_on_load = get_list("PERLDB_ON_LOAD");
|
|
%postponed = get_list("PERLDB_POSTPONE");
|
|
my @had_breakpoints= get_list("PERLDB_VISITED");
|
|
for (0 .. $#had_breakpoints) {
|
|
my %pf = get_list("PERLDB_FILE_$_");
|
|
$postponed_file{$had_breakpoints[$_]} = \%pf if %pf;
|
|
}
|
|
my %opt = get_list("PERLDB_OPT");
|
|
my ($opt,$val);
|
|
while (($opt,$val) = each %opt) {
|
|
$val =~ s/[\\\']/\\$1/g;
|
|
parse_options("$opt'$val'");
|
|
}
|
|
@INC = get_list("PERLDB_INC");
|
|
@ini_INC = @INC;
|
|
$pretype = [get_list("PERLDB_PRETYPE")];
|
|
$pre = [get_list("PERLDB_PRE")];
|
|
$post = [get_list("PERLDB_POST")];
|
|
@typeahead = get_list("PERLDB_TYPEAHEAD", @typeahead);
|
|
}
|
|
|
|
if ($notty) {
|
|
$runnonstop = 1;
|
|
} else {
|
|
# Is Perl being run from Emacs?
|
|
$emacs = ((defined $main::ARGV[0]) and ($main::ARGV[0] eq '-emacs'));
|
|
$rl = 0, shift(@main::ARGV) if $emacs;
|
|
|
|
#require Term::ReadLine;
|
|
|
|
if (-e "/dev/tty") {
|
|
$console = "/dev/tty";
|
|
} elsif ($^O eq 'dos' or -e "con" or $^O eq 'MSWin32') {
|
|
$console = "con";
|
|
} else {
|
|
$console = "sys\$command";
|
|
}
|
|
|
|
if (($^O eq 'MSWin32') and ($emacs or defined $ENV{EMACS})) {
|
|
$console = undef;
|
|
}
|
|
|
|
# Around a bug:
|
|
if (defined $ENV{OS2_SHELL} and ($emacs or $ENV{WINDOWID})) { # In OS/2
|
|
$console = undef;
|
|
}
|
|
|
|
$console = $tty if defined $tty;
|
|
|
|
if (defined $console) {
|
|
open(IN,"+<$console") || open(IN,"<$console") || open(IN,"<&STDIN");
|
|
open(OUT,"+>$console") || open(OUT,">$console") || open(OUT,">&STDERR")
|
|
|| open(OUT,">&STDOUT"); # so we don't dongle stdout
|
|
} else {
|
|
open(IN,"<&STDIN");
|
|
open(OUT,">&STDERR") || open(OUT,">&STDOUT"); # so we don't dongle stdout
|
|
$console = 'STDIN/OUT';
|
|
}
|
|
# so open("|more") can read from STDOUT and so we don't dingle stdin
|
|
$IN = \*IN;
|
|
|
|
$OUT = \*OUT;
|
|
select($OUT);
|
|
$| = 1; # for DB::OUT
|
|
select(STDOUT);
|
|
|
|
$LINEINFO = $OUT unless defined $LINEINFO;
|
|
$lineinfo = $console unless defined $lineinfo;
|
|
|
|
$| = 1; # for real STDOUT
|
|
|
|
$header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/;
|
|
unless ($runnonstop) {
|
|
print $OUT "\nLoading DB routines from $header\n";
|
|
print $OUT ("Emacs support ",
|
|
$emacs ? "enabled" : "available",
|
|
".\n");
|
|
print $OUT "\nEnter h or `h h' for help.\n\n";
|
|
}
|
|
}
|
|
|
|
@ARGS = @ARGV;
|
|
for (@args) {
|
|
s/\'/\\\'/g;
|
|
s/(.*)/'$1'/ unless /^-?[\d.]+$/;
|
|
}
|
|
|
|
if (defined &afterinit) { # May be defined in $rcfile
|
|
&afterinit();
|
|
}
|
|
|
|
$I_m_init = 1;
|
|
|
|
############################################################ Subroutines
|
|
|
|
sub DB {
|
|
# _After_ the perl program is compiled, $single is set to 1:
|
|
if ($single and not $second_time++) {
|
|
if ($runnonstop) { # Disable until signal
|
|
for ($i=0; $i <= $#stack; ) {
|
|
$stack[$i++] &= ~1;
|
|
}
|
|
$single = 0;
|
|
# return; # Would not print trace!
|
|
} elsif ($ImmediateStop) {
|
|
$ImmediateStop = 0;
|
|
$signal = 1;
|
|
}
|
|
}
|
|
$runnonstop = 0 if $single or $signal; # Disable it if interactive.
|
|
&save;
|
|
($package, $filename, $line) = caller;
|
|
$filename_ini = $filename;
|
|
$usercontext = '($@, $!, $^E, $,, $/, $\, $^W) = @saved;' .
|
|
"package $package;"; # this won't let them modify, alas
|
|
local(*dbline) = $main::{'_<' . $filename};
|
|
$max = $#dbline;
|
|
if (($stop,$action) = split(/\0/,$dbline{$line})) {
|
|
if ($stop eq '1') {
|
|
$signal |= 1;
|
|
} elsif ($stop) {
|
|
$evalarg = "\$DB::signal |= 1 if do {$stop}"; &eval;
|
|
$dbline{$line} =~ s/;9($|\0)/$1/;
|
|
}
|
|
}
|
|
my $was_signal = $signal;
|
|
if ($trace & 2) {
|
|
for (my $n = 0; $n <= $#to_watch; $n++) {
|
|
$evalarg = $to_watch[$n];
|
|
local $onetimeDump; # Do not output results
|
|
my ($val) = &eval; # Fix context (&eval is doing array)?
|
|
$val = ( (defined $val) ? "'$val'" : 'undef' );
|
|
if ($val ne $old_watch[$n]) {
|
|
$signal = 1;
|
|
print $OUT <<EOP;
|
|
Watchpoint $n:\t$to_watch[$n] changed:
|
|
old value:\t$old_watch[$n]
|
|
new value:\t$val
|
|
EOP
|
|
$old_watch[$n] = $val;
|
|
}
|
|
}
|
|
}
|
|
if ($trace & 4) { # User-installed watch
|
|
return if watchfunction($package, $filename, $line)
|
|
and not $single and not $was_signal and not ($trace & ~4);
|
|
}
|
|
$was_signal = $signal;
|
|
$signal = 0;
|
|
if ($single || ($trace & 1) || $was_signal) {
|
|
$term || &setterm;
|
|
if ($emacs) {
|
|
$position = "\032\032$filename:$line:0\n";
|
|
print $LINEINFO $position;
|
|
} elsif ($package eq 'DB::fake') {
|
|
print_help(<<EOP);
|
|
Debugged program terminated. Use B<q> to quit or B<R> to restart,
|
|
use B<O> I<inhibit_exit> to avoid stopping after program termination,
|
|
B<h q>, B<h R> or B<h O> to get additional info.
|
|
EOP
|
|
$package = 'main';
|
|
$usercontext = '($@, $!, $,, $/, $\, $^W) = @saved;' .
|
|
"package $package;"; # this won't let them modify, alas
|
|
} else {
|
|
$sub =~ s/\'/::/;
|
|
$prefix = $sub =~ /::/ ? "" : "${'package'}::";
|
|
$prefix .= "$sub($filename:";
|
|
$after = ($dbline[$line] =~ /\n$/ ? '' : "\n");
|
|
if (length($prefix) > 30) {
|
|
$position = "$prefix$line):\n$line:\t$dbline[$line]$after";
|
|
$prefix = "";
|
|
$infix = ":\t";
|
|
} else {
|
|
$infix = "):\t";
|
|
$position = "$prefix$line$infix$dbline[$line]$after";
|
|
}
|
|
if ($frame) {
|
|
print $LINEINFO ' ' x $#stack, "$line:\t$dbline[$line]$after";
|
|
} else {
|
|
print $LINEINFO $position;
|
|
}
|
|
for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi
|
|
last if $dbline[$i] =~ /^\s*[\;\}\#\n]/;
|
|
last if $signal;
|
|
$after = ($dbline[$i] =~ /\n$/ ? '' : "\n");
|
|
$incr_pos = "$prefix$i$infix$dbline[$i]$after";
|
|
$position .= $incr_pos;
|
|
if ($frame) {
|
|
print $LINEINFO ' ' x $#stack, "$i:\t$dbline[$i]$after";
|
|
} else {
|
|
print $LINEINFO $incr_pos;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
$evalarg = $action, &eval if $action;
|
|
if ($single || $was_signal) {
|
|
local $level = $level + 1;
|
|
foreach $evalarg (@$pre) {
|
|
&eval;
|
|
}
|
|
print $OUT $#stack . " levels deep in subroutine calls!\n"
|
|
if $single & 4;
|
|
$start = $line;
|
|
$incr = -1; # for backward motion.
|
|
@typeahead = @$pretype, @typeahead;
|
|
CMD:
|
|
while (($term || &setterm),
|
|
($term_pid == $$ or &resetterm),
|
|
defined ($cmd=&readline(" DB" . ('<' x $level) .
|
|
($#hist+1) . ('>' x $level) .
|
|
" "))) {
|
|
$single = 0;
|
|
$signal = 0;
|
|
$cmd =~ s/\\$/\n/ && do {
|
|
$cmd .= &readline(" cont: ");
|
|
redo CMD;
|
|
};
|
|
$cmd =~ /^$/ && ($cmd = $laststep);
|
|
push(@hist,$cmd) if length($cmd) > 1;
|
|
PIPE: {
|
|
($i) = split(/\s+/,$cmd);
|
|
eval "\$cmd =~ $alias{$i}", print $OUT $@ if $alias{$i};
|
|
$cmd =~ /^q$/ && ($exiting = 1) && exit 0;
|
|
$cmd =~ /^h$/ && do {
|
|
print_help($help);
|
|
next CMD; };
|
|
$cmd =~ /^h\s+h$/ && do {
|
|
print_help($summary);
|
|
next CMD; };
|
|
$cmd =~ /^h\s+(\S)$/ && do {
|
|
my $asked = "\Q$1";
|
|
if ($help =~ /^(?:[IB]<)$asked/m) {
|
|
while ($help =~ /^((?:[IB]<)$asked([\s\S]*?)\n)(?!\s)/mg) {
|
|
print_help($1);
|
|
}
|
|
} else {
|
|
print_help("B<$asked> is not a debugger command.\n");
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^t$/ && do {
|
|
($trace & 1) ? ($trace &= ~1) : ($trace |= 1);
|
|
print $OUT "Trace = " .
|
|
(($trace & 1) ? "on" : "off" ) . "\n";
|
|
next CMD; };
|
|
$cmd =~ /^S(\s+(!)?(.+))?$/ && do {
|
|
$Srev = defined $2; $Spatt = $3; $Snocheck = ! defined $1;
|
|
foreach $subname (sort(keys %sub)) {
|
|
if ($Snocheck or $Srev^($subname =~ /$Spatt/)) {
|
|
print $OUT $subname,"\n";
|
|
}
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^v$/ && do {
|
|
list_versions(); next CMD};
|
|
$cmd =~ s/^X\b/V $package/;
|
|
$cmd =~ /^V$/ && do {
|
|
$cmd = "V $package"; };
|
|
$cmd =~ /^V\b\s*(\S+)\s*(.*)/ && do {
|
|
local ($savout) = select($OUT);
|
|
$packname = $1;
|
|
@vars = split(' ',$2);
|
|
do 'dumpvar.pl' unless defined &main::dumpvar;
|
|
if (defined &main::dumpvar) {
|
|
local $frame = 0;
|
|
local $doret = -2;
|
|
&main::dumpvar($packname,@vars);
|
|
} else {
|
|
print $OUT "dumpvar.pl not available.\n";
|
|
}
|
|
select ($savout);
|
|
next CMD; };
|
|
$cmd =~ s/^x\b/ / && do { # So that will be evaled
|
|
$onetimeDump = 'dump'; };
|
|
$cmd =~ s/^m\s+([\w:]+)\s*$/ / && do {
|
|
methods($1); next CMD};
|
|
$cmd =~ s/^m\b/ / && do { # So this will be evaled
|
|
$onetimeDump = 'methods'; };
|
|
$cmd =~ /^f\b\s*(.*)/ && do {
|
|
$file = $1;
|
|
$file =~ s/\s+$//;
|
|
if (!$file) {
|
|
print $OUT "The old f command is now the r command.\n";
|
|
print $OUT "The new f command switches filenames.\n";
|
|
next CMD;
|
|
}
|
|
if (!defined $main::{'_<' . $file}) {
|
|
if (($try) = grep(m#^_<.*$file#, keys %main::)) {{
|
|
$try = substr($try,2);
|
|
print $OUT "Choosing $try matching `$file':\n";
|
|
$file = $try;
|
|
}}
|
|
}
|
|
if (!defined $main::{'_<' . $file}) {
|
|
print $OUT "No file matching `$file' is loaded.\n";
|
|
next CMD;
|
|
} elsif ($file ne $filename) {
|
|
*dbline = $main::{'_<' . $file};
|
|
$max = $#dbline;
|
|
$filename = $file;
|
|
$start = 1;
|
|
$cmd = "l";
|
|
} else {
|
|
print $OUT "Already in $file.\n";
|
|
next CMD;
|
|
}
|
|
};
|
|
$cmd =~ s/^l\s+-\s*$/-/;
|
|
$cmd =~ /^l\b\s*([\':A-Za-z_][\':\w]*)/ && do {
|
|
$subname = $1;
|
|
$subname =~ s/\'/::/;
|
|
$subname = $package."::".$subname
|
|
unless $subname =~ /::/;
|
|
$subname = "main".$subname if substr($subname,0,2) eq "::";
|
|
@pieces = split(/:/,find_sub($subname));
|
|
$subrange = pop @pieces;
|
|
$file = join(':', @pieces);
|
|
if ($file ne $filename) {
|
|
*dbline = $main::{'_<' . $file};
|
|
$max = $#dbline;
|
|
$filename = $file;
|
|
}
|
|
if ($subrange) {
|
|
if (eval($subrange) < -$window) {
|
|
$subrange =~ s/-.*/+/;
|
|
}
|
|
$cmd = "l $subrange";
|
|
} else {
|
|
print $OUT "Subroutine $subname not found.\n";
|
|
next CMD;
|
|
} };
|
|
$cmd =~ /^\.$/ && do {
|
|
$incr = -1; # for backward motion.
|
|
$start = $line;
|
|
$filename = $filename_ini;
|
|
*dbline = $main::{'_<' . $filename};
|
|
$max = $#dbline;
|
|
print $LINEINFO $position;
|
|
next CMD };
|
|
$cmd =~ /^w\b\s*(\d*)$/ && do {
|
|
$incr = $window - 1;
|
|
$start = $1 if $1;
|
|
$start -= $preview;
|
|
#print $OUT 'l ' . $start . '-' . ($start + $incr);
|
|
$cmd = 'l ' . $start . '-' . ($start + $incr); };
|
|
$cmd =~ /^-$/ && do {
|
|
$start -= $incr + $window + 1;
|
|
$start = 1 if $start <= 0;
|
|
$incr = $window - 1;
|
|
$cmd = 'l ' . ($start) . '+'; };
|
|
$cmd =~ /^l$/ && do {
|
|
$incr = $window - 1;
|
|
$cmd = 'l ' . $start . '-' . ($start + $incr); };
|
|
$cmd =~ /^l\b\s*(\d*)\+(\d*)$/ && do {
|
|
$start = $1 if $1;
|
|
$incr = $2;
|
|
$incr = $window - 1 unless $incr;
|
|
$cmd = 'l ' . $start . '-' . ($start + $incr); };
|
|
$cmd =~ /^l\b\s*((-?[\d\$\.]+)([-,]([\d\$\.]+))?)?/ && do {
|
|
$end = (!defined $2) ? $max : ($4 ? $4 : $2);
|
|
$end = $max if $end > $max;
|
|
$i = $2;
|
|
$i = $line if $i eq '.';
|
|
$i = 1 if $i < 1;
|
|
$incr = $end - $i;
|
|
if ($emacs) {
|
|
print $OUT "\032\032$filename:$i:0\n";
|
|
$i = $end;
|
|
} else {
|
|
for (; $i <= $end; $i++) {
|
|
($stop,$action) = split(/\0/, $dbline{$i});
|
|
$arrow = ($i==$line
|
|
and $filename eq $filename_ini)
|
|
? '==>'
|
|
: ($dbline[$i]+0 ? ':' : ' ') ;
|
|
$arrow .= 'b' if $stop;
|
|
$arrow .= 'a' if $action;
|
|
print $OUT "$i$arrow\t", $dbline[$i];
|
|
last if $signal;
|
|
}
|
|
}
|
|
$start = $i; # remember in case they want more
|
|
$start = $max if $start > $max;
|
|
next CMD; };
|
|
$cmd =~ /^D$/ && do {
|
|
print $OUT "Deleting all breakpoints...\n";
|
|
my $file;
|
|
for $file (keys %had_breakpoints) {
|
|
local *dbline = $main::{'_<' . $file};
|
|
my $max = $#dbline;
|
|
my $was;
|
|
|
|
for ($i = 1; $i <= $max ; $i++) {
|
|
if (defined $dbline{$i}) {
|
|
$dbline{$i} =~ s/^[^\0]+//;
|
|
if ($dbline{$i} =~ s/^\0?$//) {
|
|
delete $dbline{$i};
|
|
}
|
|
}
|
|
}
|
|
}
|
|
undef %postponed;
|
|
undef %postponed_file;
|
|
undef %break_on_load;
|
|
undef %had_breakpoints;
|
|
next CMD; };
|
|
$cmd =~ /^L$/ && do {
|
|
my $file;
|
|
for $file (keys %had_breakpoints) {
|
|
local *dbline = $main::{'_<' . $file};
|
|
my $max = $#dbline;
|
|
my $was;
|
|
|
|
for ($i = 1; $i <= $max; $i++) {
|
|
if (defined $dbline{$i}) {
|
|
print "$file:\n" unless $was++;
|
|
print $OUT " $i:\t", $dbline[$i];
|
|
($stop,$action) = split(/\0/, $dbline{$i});
|
|
print $OUT " break if (", $stop, ")\n"
|
|
if $stop;
|
|
print $OUT " action: ", $action, "\n"
|
|
if $action;
|
|
last if $signal;
|
|
}
|
|
}
|
|
}
|
|
if (%postponed) {
|
|
print $OUT "Postponed breakpoints in subroutines:\n";
|
|
my $subname;
|
|
for $subname (keys %postponed) {
|
|
print $OUT " $subname\t$postponed{$subname}\n";
|
|
last if $signal;
|
|
}
|
|
}
|
|
my @have = map { # Combined keys
|
|
keys %{$postponed_file{$_}}
|
|
} keys %postponed_file;
|
|
if (@have) {
|
|
print $OUT "Postponed breakpoints in files:\n";
|
|
my ($file, $line);
|
|
for $file (keys %postponed_file) {
|
|
my $db = $postponed_file{$file};
|
|
print $OUT " $file:\n";
|
|
for $line (sort {$a <=> $b} keys %$db) {
|
|
print $OUT " $line:\n";
|
|
my ($stop,$action) = split(/\0/, $$db{$line});
|
|
print $OUT " break if (", $stop, ")\n"
|
|
if $stop;
|
|
print $OUT " action: ", $action, "\n"
|
|
if $action;
|
|
last if $signal;
|
|
}
|
|
last if $signal;
|
|
}
|
|
}
|
|
if (%break_on_load) {
|
|
print $OUT "Breakpoints on load:\n";
|
|
my $file;
|
|
for $file (keys %break_on_load) {
|
|
print $OUT " $file\n";
|
|
last if $signal;
|
|
}
|
|
}
|
|
if ($trace & 2) {
|
|
print $OUT "Watch-expressions:\n";
|
|
my $expr;
|
|
for $expr (@to_watch) {
|
|
print $OUT " $expr\n";
|
|
last if $signal;
|
|
}
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^b\b\s*load\b\s*(.*)/ && do {
|
|
my $file = $1; $file =~ s/\s+$//;
|
|
{
|
|
$break_on_load{$file} = 1;
|
|
$break_on_load{$::INC{$file}} = 1 if $::INC{$file};
|
|
$file .= '.pm', redo unless $file =~ /\./;
|
|
}
|
|
$had_breakpoints{$file} = 1;
|
|
print $OUT "Will stop on load of `@{[join '\', `', sort keys %break_on_load]}'.\n";
|
|
next CMD; };
|
|
$cmd =~ /^b\b\s*(postpone|compile)\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do {
|
|
my $cond = $3 || '1';
|
|
my ($subname, $break) = ($2, $1 eq 'postpone');
|
|
$subname =~ s/\'/::/;
|
|
$subname = "${'package'}::" . $subname
|
|
unless $subname =~ /::/;
|
|
$subname = "main".$subname if substr($subname,0,2) eq "::";
|
|
$postponed{$subname} = $break
|
|
? "break +0 if $cond" : "compile";
|
|
next CMD; };
|
|
$cmd =~ /^b\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do {
|
|
$subname = $1;
|
|
$cond = $2 || '1';
|
|
$subname =~ s/\'/::/;
|
|
$subname = "${'package'}::" . $subname
|
|
unless $subname =~ /::/;
|
|
$subname = "main".$subname if substr($subname,0,2) eq "::";
|
|
# Filename below can contain ':'
|
|
($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/);
|
|
$i += 0;
|
|
if ($i) {
|
|
$filename = $file;
|
|
*dbline = $main::{'_<' . $filename};
|
|
$had_breakpoints{$filename} = 1;
|
|
$max = $#dbline;
|
|
++$i while $dbline[$i] == 0 && $i < $max;
|
|
$dbline{$i} =~ s/^[^\0]*/$cond/;
|
|
} else {
|
|
print $OUT "Subroutine $subname not found.\n";
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^b\b\s*(\d*)\s*(.*)/ && do {
|
|
$i = ($1?$1:$line);
|
|
$cond = $2 || '1';
|
|
if ($dbline[$i] == 0) {
|
|
print $OUT "Line $i not breakable.\n";
|
|
} else {
|
|
$had_breakpoints{$filename} = 1;
|
|
$dbline{$i} =~ s/^[^\0]*/$cond/;
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^d\b\s*(\d+)?/ && do {
|
|
$i = ($1?$1:$line);
|
|
$dbline{$i} =~ s/^[^\0]*//;
|
|
delete $dbline{$i} if $dbline{$i} eq '';
|
|
next CMD; };
|
|
$cmd =~ /^A$/ && do {
|
|
my $file;
|
|
for $file (keys %had_breakpoints) {
|
|
local *dbline = $main::{'_<' . $file};
|
|
my $max = $#dbline;
|
|
my $was;
|
|
|
|
for ($i = 1; $i <= $max ; $i++) {
|
|
if (defined $dbline{$i}) {
|
|
$dbline{$i} =~ s/\0[^\0]*//;
|
|
delete $dbline{$i} if $dbline{$i} eq '';
|
|
}
|
|
}
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^O\s*$/ && do {
|
|
for (@options) {
|
|
&dump_option($_);
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^O\s*(\S.*)/ && do {
|
|
parse_options($1);
|
|
next CMD; };
|
|
$cmd =~ /^\<\<\s*(.*)/ && do { # \<\< for CPerl sake: not HERE
|
|
push @$pre, action($1);
|
|
next CMD; };
|
|
$cmd =~ /^>>\s*(.*)/ && do {
|
|
push @$post, action($1);
|
|
next CMD; };
|
|
$cmd =~ /^<\s*(.*)/ && do {
|
|
$pre = [], next CMD unless $1;
|
|
$pre = [action($1)];
|
|
next CMD; };
|
|
$cmd =~ /^>\s*(.*)/ && do {
|
|
$post = [], next CMD unless $1;
|
|
$post = [action($1)];
|
|
next CMD; };
|
|
$cmd =~ /^\{\{\s*(.*)/ && do {
|
|
push @$pretype, $1;
|
|
next CMD; };
|
|
$cmd =~ /^\{\s*(.*)/ && do {
|
|
$pretype = [], next CMD unless $1;
|
|
$pretype = [$1];
|
|
next CMD; };
|
|
$cmd =~ /^a\b\s*(\d+)(\s+(.*))?/ && do {
|
|
$i = $1; $j = $3;
|
|
if ($dbline[$i] == 0) {
|
|
print $OUT "Line $i may not have an action.\n";
|
|
} else {
|
|
$dbline{$i} =~ s/\0[^\0]*//;
|
|
$dbline{$i} .= "\0" . action($j);
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^n$/ && do {
|
|
end_report(), next CMD if $finished and $level <= 1;
|
|
$single = 2;
|
|
$laststep = $cmd;
|
|
last CMD; };
|
|
$cmd =~ /^s$/ && do {
|
|
end_report(), next CMD if $finished and $level <= 1;
|
|
$single = 1;
|
|
$laststep = $cmd;
|
|
last CMD; };
|
|
$cmd =~ /^c\b\s*([\w:]*)\s*$/ && do {
|
|
end_report(), next CMD if $finished and $level <= 1;
|
|
$subname = $i = $1;
|
|
if ($i =~ /\D/) { # subroutine name
|
|
$subname = $package."::".$subname
|
|
unless $subname =~ /::/;
|
|
($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/);
|
|
$i += 0;
|
|
if ($i) {
|
|
$filename = $file;
|
|
*dbline = $main::{'_<' . $filename};
|
|
$had_breakpoints{$filename}++;
|
|
$max = $#dbline;
|
|
++$i while $dbline[$i] == 0 && $i < $max;
|
|
} else {
|
|
print $OUT "Subroutine $subname not found.\n";
|
|
next CMD;
|
|
}
|
|
}
|
|
if ($i) {
|
|
if ($dbline[$i] == 0) {
|
|
print $OUT "Line $i not breakable.\n";
|
|
next CMD;
|
|
}
|
|
$dbline{$i} =~ s/($|\0)/;9$1/; # add one-time-only b.p.
|
|
}
|
|
for ($i=0; $i <= $#stack; ) {
|
|
$stack[$i++] &= ~1;
|
|
}
|
|
last CMD; };
|
|
$cmd =~ /^r$/ && do {
|
|
end_report(), next CMD if $finished and $level <= 1;
|
|
$stack[$#stack] |= 1;
|
|
$doret = $option{PrintRet} ? $#stack - 1 : -2;
|
|
last CMD; };
|
|
$cmd =~ /^R$/ && do {
|
|
print $OUT "Warning: some settings and command-line options may be lost!\n";
|
|
my (@script, @flags, $cl);
|
|
push @flags, '-w' if $ini_warn;
|
|
# Put all the old includes at the start to get
|
|
# the same debugger.
|
|
for (@ini_INC) {
|
|
push @flags, '-I', $_;
|
|
}
|
|
# Arrange for setting the old INC:
|
|
set_list("PERLDB_INC", @ini_INC);
|
|
if ($0 eq '-e') {
|
|
for (1..$#{'::_<-e'}) { # The first line is PERL5DB
|
|
chomp ($cl = $ {'::_<-e'}[$_]);
|
|
push @script, '-e', $cl;
|
|
}
|
|
} else {
|
|
@script = $0;
|
|
}
|
|
set_list("PERLDB_HIST",
|
|
$term->Features->{getHistory}
|
|
? $term->GetHistory : @hist);
|
|
my @had_breakpoints = keys %had_breakpoints;
|
|
set_list("PERLDB_VISITED", @had_breakpoints);
|
|
set_list("PERLDB_OPT", %option);
|
|
set_list("PERLDB_ON_LOAD", %break_on_load);
|
|
my @hard;
|
|
for (0 .. $#had_breakpoints) {
|
|
my $file = $had_breakpoints[$_];
|
|
*dbline = $main::{'_<' . $file};
|
|
next unless %dbline or $postponed_file{$file};
|
|
(push @hard, $file), next
|
|
if $file =~ /^\(eval \d+\)$/;
|
|
my @add;
|
|
@add = %{$postponed_file{$file}}
|
|
if $postponed_file{$file};
|
|
set_list("PERLDB_FILE_$_", %dbline, @add);
|
|
}
|
|
for (@hard) { # Yes, really-really...
|
|
# Find the subroutines in this eval
|
|
*dbline = $main::{'_<' . $_};
|
|
my ($quoted, $sub, %subs, $line) = quotemeta $_;
|
|
for $sub (keys %sub) {
|
|
next unless $sub{$sub} =~ /^$quoted:(\d+)-(\d+)$/;
|
|
$subs{$sub} = [$1, $2];
|
|
}
|
|
unless (%subs) {
|
|
print $OUT
|
|
"No subroutines in $_, ignoring breakpoints.\n";
|
|
next;
|
|
}
|
|
LINES: for $line (keys %dbline) {
|
|
# One breakpoint per sub only:
|
|
my ($offset, $sub, $found);
|
|
SUBS: for $sub (keys %subs) {
|
|
if ($subs{$sub}->[1] >= $line # Not after the subroutine
|
|
and (not defined $offset # Not caught
|
|
or $offset < 0 )) { # or badly caught
|
|
$found = $sub;
|
|
$offset = $line - $subs{$sub}->[0];
|
|
$offset = "+$offset", last SUBS if $offset >= 0;
|
|
}
|
|
}
|
|
if (defined $offset) {
|
|
$postponed{$found} =
|
|
"break $offset if $dbline{$line}";
|
|
} else {
|
|
print $OUT "Breakpoint in $_:$line ignored: after all the subroutines.\n";
|
|
}
|
|
}
|
|
}
|
|
set_list("PERLDB_POSTPONE", %postponed);
|
|
set_list("PERLDB_PRETYPE", @$pretype);
|
|
set_list("PERLDB_PRE", @$pre);
|
|
set_list("PERLDB_POST", @$post);
|
|
set_list("PERLDB_TYPEAHEAD", @typeahead);
|
|
$ENV{PERLDB_RESTART} = 1;
|
|
#print "$^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS";
|
|
exec $^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS;
|
|
print $OUT "exec failed: $!\n";
|
|
last CMD; };
|
|
$cmd =~ /^T$/ && do {
|
|
print_trace($OUT, 1); # skip DB
|
|
next CMD; };
|
|
$cmd =~ /^W\s*$/ && do {
|
|
$trace &= ~2;
|
|
@to_watch = @old_watch = ();
|
|
next CMD; };
|
|
$cmd =~ /^W\b\s*(.*)/s && do {
|
|
push @to_watch, $1;
|
|
$evalarg = $1;
|
|
my ($val) = &eval;
|
|
$val = (defined $val) ? "'$val'" : 'undef' ;
|
|
push @old_watch, $val;
|
|
$trace |= 2;
|
|
next CMD; };
|
|
$cmd =~ /^\/(.*)$/ && do {
|
|
$inpat = $1;
|
|
$inpat =~ s:([^\\])/$:$1:;
|
|
if ($inpat ne "") {
|
|
eval '$inpat =~ m'."\a$inpat\a";
|
|
if ($@ ne "") {
|
|
print $OUT "$@";
|
|
next CMD;
|
|
}
|
|
$pat = $inpat;
|
|
}
|
|
$end = $start;
|
|
$incr = -1;
|
|
eval '
|
|
for (;;) {
|
|
++$start;
|
|
$start = 1 if ($start > $max);
|
|
last if ($start == $end);
|
|
if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) {
|
|
if ($emacs) {
|
|
print $OUT "\032\032$filename:$start:0\n";
|
|
} else {
|
|
print $OUT "$start:\t", $dbline[$start], "\n";
|
|
}
|
|
last;
|
|
}
|
|
} ';
|
|
print $OUT "/$pat/: not found\n" if ($start == $end);
|
|
next CMD; };
|
|
$cmd =~ /^\?(.*)$/ && do {
|
|
$inpat = $1;
|
|
$inpat =~ s:([^\\])\?$:$1:;
|
|
if ($inpat ne "") {
|
|
eval '$inpat =~ m'."\a$inpat\a";
|
|
if ($@ ne "") {
|
|
print $OUT "$@";
|
|
next CMD;
|
|
}
|
|
$pat = $inpat;
|
|
}
|
|
$end = $start;
|
|
$incr = -1;
|
|
eval '
|
|
for (;;) {
|
|
--$start;
|
|
$start = $max if ($start <= 0);
|
|
last if ($start == $end);
|
|
if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) {
|
|
if ($emacs) {
|
|
print $OUT "\032\032$filename:$start:0\n";
|
|
} else {
|
|
print $OUT "$start:\t", $dbline[$start], "\n";
|
|
}
|
|
last;
|
|
}
|
|
} ';
|
|
print $OUT "?$pat?: not found\n" if ($start == $end);
|
|
next CMD; };
|
|
$cmd =~ /^$rc+\s*(-)?(\d+)?$/ && do {
|
|
pop(@hist) if length($cmd) > 1;
|
|
$i = $1 ? ($#hist-($2?$2:1)) : ($2?$2:$#hist);
|
|
$cmd = $hist[$i];
|
|
print $OUT $cmd;
|
|
redo CMD; };
|
|
$cmd =~ /^$sh$sh\s*([\x00-\xff]*)/ && do {
|
|
&system($1);
|
|
next CMD; };
|
|
$cmd =~ /^$rc([^$rc].*)$/ && do {
|
|
$pat = "^$1";
|
|
pop(@hist) if length($cmd) > 1;
|
|
for ($i = $#hist; $i; --$i) {
|
|
last if $hist[$i] =~ /$pat/;
|
|
}
|
|
if (!$i) {
|
|
print $OUT "No such command!\n\n";
|
|
next CMD;
|
|
}
|
|
$cmd = $hist[$i];
|
|
print $OUT $cmd;
|
|
redo CMD; };
|
|
$cmd =~ /^$sh$/ && do {
|
|
&system($ENV{SHELL}||"/bin/sh");
|
|
next CMD; };
|
|
$cmd =~ /^$sh\s*([\x00-\xff]*)/ && do {
|
|
&system($ENV{SHELL}||"/bin/sh","-c",$1);
|
|
next CMD; };
|
|
$cmd =~ /^H\b\s*(-(\d+))?/ && do {
|
|
$end = $2?($#hist-$2):0;
|
|
$hist = 0 if $hist < 0;
|
|
for ($i=$#hist; $i>$end; $i--) {
|
|
print $OUT "$i: ",$hist[$i],"\n"
|
|
unless $hist[$i] =~ /^.?$/;
|
|
};
|
|
next CMD; };
|
|
$cmd =~ s/^p$/print {\$DB::OUT} \$_/;
|
|
$cmd =~ s/^p\b/print {\$DB::OUT} /;
|
|
$cmd =~ /^=/ && do {
|
|
if (local($k,$v) = ($cmd =~ /^=\s*(\S+)\s+(.*)/)) {
|
|
$alias{$k}="s~$k~$v~";
|
|
print $OUT "$k = $v\n";
|
|
} elsif ($cmd =~ /^=\s*$/) {
|
|
foreach $k (sort keys(%alias)) {
|
|
if (($v = $alias{$k}) =~ s~^s\~$k\~(.*)\~$~$1~) {
|
|
print $OUT "$k = $v\n";
|
|
} else {
|
|
print $OUT "$k\t$alias{$k}\n";
|
|
};
|
|
};
|
|
};
|
|
next CMD; };
|
|
$cmd =~ /^\|\|?\s*[^|]/ && do {
|
|
if ($pager =~ /^\|/) {
|
|
open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT");
|
|
open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT");
|
|
} else {
|
|
open(SAVEOUT,">&OUT") || &warn("Can't save DB::OUT");
|
|
}
|
|
unless ($piped=open(OUT,$pager)) {
|
|
&warn("Can't pipe output to `$pager'");
|
|
if ($pager =~ /^\|/) {
|
|
open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT");
|
|
open(STDOUT,">&SAVEOUT")
|
|
|| &warn("Can't restore STDOUT");
|
|
close(SAVEOUT);
|
|
} else {
|
|
open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT");
|
|
}
|
|
next CMD;
|
|
}
|
|
$SIG{PIPE}= \&DB::catch if $pager =~ /^\|/
|
|
&& "" eq $SIG{PIPE} || "DEFAULT" eq $SIG{PIPE};
|
|
$selected= select(OUT);
|
|
$|= 1;
|
|
select( $selected ), $selected= "" unless $cmd =~ /^\|\|/;
|
|
$cmd =~ s/^\|+\s*//;
|
|
redo PIPE; };
|
|
# XXX Local variants do not work!
|
|
$cmd =~ s/^t\s/\$DB::trace |= 1;\n/;
|
|
$cmd =~ s/^s\s/\$DB::single = 1;\n/ && do {$laststep = 's'};
|
|
$cmd =~ s/^n\s/\$DB::single = 2;\n/ && do {$laststep = 'n'};
|
|
} # PIPE:
|
|
$evalarg = "\$^D = \$^D | \$DB::db_stop;\n$cmd"; &eval;
|
|
if ($onetimeDump) {
|
|
$onetimeDump = undef;
|
|
} elsif ($term_pid == $$) {
|
|
print $OUT "\n";
|
|
}
|
|
} continue { # CMD:
|
|
if ($piped) {
|
|
if ($pager =~ /^\|/) {
|
|
$?= 0; close(OUT) || &warn("Can't close DB::OUT");
|
|
&warn( "Pager `$pager' failed: ",
|
|
($?>>8) > 128 ? ($?>>8)-256 : ($?>>8),
|
|
( $? & 128 ) ? " (core dumped)" : "",
|
|
( $? & 127 ) ? " (SIG ".($?&127).")" : "", "\n" ) if $?;
|
|
open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT");
|
|
open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT");
|
|
$SIG{PIPE}= "DEFAULT" if $SIG{PIPE} eq \&DB::catch;
|
|
# Will stop ignoring SIGPIPE if done like nohup(1)
|
|
# does SIGINT but Perl doesn't give us a choice.
|
|
} else {
|
|
open(OUT,">&SAVEOUT") || &warn("Can't restore DB::OUT");
|
|
}
|
|
close(SAVEOUT);
|
|
select($selected), $selected= "" unless $selected eq "";
|
|
$piped= "";
|
|
}
|
|
} # CMD:
|
|
$exiting = 1 unless defined $cmd;
|
|
foreach $evalarg (@$post) {
|
|
&eval;
|
|
}
|
|
} # if ($single || $signal)
|
|
($@, $!, $^E, $,, $/, $\, $^W) = @saved;
|
|
();
|
|
}
|
|
|
|
# The following code may be executed now:
|
|
# BEGIN {warn 4}
|
|
|
|
sub sub {
|
|
my ($al, $ret, @ret) = "";
|
|
if (length($sub) > 10 && substr($sub, -10, 10) eq '::AUTOLOAD') {
|
|
$al = " for $$sub";
|
|
}
|
|
push(@stack, $single);
|
|
$single &= 1;
|
|
$single |= 4 if $#stack == $deep;
|
|
($frame & 4
|
|
? ( (print $LINEINFO ' ' x ($#stack - 1), "in "),
|
|
# Why -1? But it works! :-(
|
|
print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
|
|
: print $LINEINFO ' ' x ($#stack - 1), "entering $sub$al\n") if $frame;
|
|
if (wantarray) {
|
|
@ret = &$sub;
|
|
$single |= pop(@stack);
|
|
($frame & 4
|
|
? ( (print $LINEINFO ' ' x $#stack, "out "),
|
|
print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
|
|
: print $LINEINFO ' ' x $#stack, "exited $sub$al\n") if $frame & 2;
|
|
if ($doret eq $#stack or $frame & 16) {
|
|
my $fh = ($doret eq $#stack ? $OUT : $LINEINFO);
|
|
print $fh ' ' x $#stack if $frame & 16;
|
|
print $fh "list context return from $sub:\n";
|
|
dumpit($fh, \@ret );
|
|
$doret = -2;
|
|
}
|
|
@ret;
|
|
} else {
|
|
if (defined wantarray) {
|
|
$ret = &$sub;
|
|
} else {
|
|
&$sub; undef $ret;
|
|
};
|
|
$single |= pop(@stack);
|
|
($frame & 4
|
|
? ( (print $LINEINFO ' ' x $#stack, "out "),
|
|
print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
|
|
: print $LINEINFO ' ' x $#stack, "exited $sub$al\n") if $frame & 2;
|
|
if ($doret eq $#stack or $frame & 16 and defined wantarray) {
|
|
my $fh = ($doret eq $#stack ? $OUT : $LINEINFO);
|
|
print $fh (' ' x $#stack) if $frame & 16;
|
|
print $fh (defined wantarray
|
|
? "scalar context return from $sub: "
|
|
: "void context return from $sub\n");
|
|
dumpit( $fh, $ret ) if defined wantarray;
|
|
$doret = -2;
|
|
}
|
|
$ret;
|
|
}
|
|
}
|
|
|
|
sub save {
|
|
@saved = ($@, $!, $^E, $,, $/, $\, $^W);
|
|
$, = ""; $/ = "\n"; $\ = ""; $^W = 0;
|
|
}
|
|
|
|
# The following takes its argument via $evalarg to preserve current @_
|
|
|
|
sub eval {
|
|
my @res;
|
|
{
|
|
local (@stack) = @stack; # guard against recursive debugging
|
|
my $otrace = $trace;
|
|
my $osingle = $single;
|
|
my $od = $^D;
|
|
@res = eval "$usercontext $evalarg;\n"; # '\n' for nice recursive debug
|
|
$trace = $otrace;
|
|
$single = $osingle;
|
|
$^D = $od;
|
|
}
|
|
my $at = $@;
|
|
local $saved[0]; # Preserve the old value of $@
|
|
eval { &DB::save };
|
|
if ($at) {
|
|
print $OUT $at;
|
|
} elsif ($onetimeDump eq 'dump') {
|
|
dumpit($OUT, \@res);
|
|
} elsif ($onetimeDump eq 'methods') {
|
|
methods($res[0]);
|
|
}
|
|
@res;
|
|
}
|
|
|
|
sub postponed_sub {
|
|
my $subname = shift;
|
|
if ($postponed{$subname} =~ s/^break\s([+-]?\d+)\s+if\s//) {
|
|
my $offset = $1 || 0;
|
|
# Filename below can contain ':'
|
|
my ($file,$i) = (find_sub($subname) =~ /^(.*):(\d+)-.*$/);
|
|
if ($i) {
|
|
$i += $offset;
|
|
local *dbline = $main::{'_<' . $file};
|
|
local $^W = 0; # != 0 is magical below
|
|
$had_breakpoints{$file}++;
|
|
my $max = $#dbline;
|
|
++$i until $dbline[$i] != 0 or $i >= $max;
|
|
$dbline{$i} = delete $postponed{$subname};
|
|
} else {
|
|
print $OUT "Subroutine $subname not found.\n";
|
|
}
|
|
return;
|
|
}
|
|
elsif ($postponed{$subname} eq 'compile') { $signal = 1 }
|
|
#print $OUT "In postponed_sub for `$subname'.\n";
|
|
}
|
|
|
|
sub postponed {
|
|
if ($ImmediateStop) {
|
|
$ImmediateStop = 0;
|
|
$signal = 1;
|
|
}
|
|
return &postponed_sub
|
|
unless ref \$_[0] eq 'GLOB'; # A subroutine is compiled.
|
|
# Cannot be done before the file is compiled
|
|
local *dbline = shift;
|
|
my $filename = $dbline;
|
|
$filename =~ s/^_<//;
|
|
$signal = 1, print $OUT "'$filename' loaded...\n"
|
|
if $break_on_load{$filename};
|
|
print $LINEINFO ' ' x $#stack, "Package $filename.\n" if $frame;
|
|
return unless $postponed_file{$filename};
|
|
$had_breakpoints{$filename}++;
|
|
#%dbline = %{$postponed_file{$filename}}; # Cannot be done: unsufficient magic
|
|
my $key;
|
|
for $key (keys %{$postponed_file{$filename}}) {
|
|
$dbline{$key} = $ {$postponed_file{$filename}}{$key};
|
|
}
|
|
delete $postponed_file{$filename};
|
|
}
|
|
|
|
sub dumpit {
|
|
local ($savout) = select(shift);
|
|
my $osingle = $single;
|
|
my $otrace = $trace;
|
|
$single = $trace = 0;
|
|
local $frame = 0;
|
|
local $doret = -2;
|
|
unless (defined &main::dumpValue) {
|
|
do 'dumpvar.pl';
|
|
}
|
|
if (defined &main::dumpValue) {
|
|
&main::dumpValue(shift);
|
|
} else {
|
|
print $OUT "dumpvar.pl not available.\n";
|
|
}
|
|
$single = $osingle;
|
|
$trace = $otrace;
|
|
select ($savout);
|
|
}
|
|
|
|
# Tied method do not create a context, so may get wrong message:
|
|
|
|
sub print_trace {
|
|
my $fh = shift;
|
|
my @sub = dump_trace($_[0] + 1, $_[1]);
|
|
my $short = $_[2]; # Print short report, next one for sub name
|
|
my $s;
|
|
for ($i=0; $i <= $#sub; $i++) {
|
|
last if $signal;
|
|
local $" = ', ';
|
|
my $args = defined $sub[$i]{args}
|
|
? "(@{ $sub[$i]{args} })"
|
|
: '' ;
|
|
$args = (substr $args, 0, $maxtrace - 3) . '...'
|
|
if length $args > $maxtrace;
|
|
my $file = $sub[$i]{file};
|
|
$file = $file eq '-e' ? $file : "file `$file'" unless $short;
|
|
$s = $sub[$i]{sub};
|
|
$s = (substr $s, 0, $maxtrace - 3) . '...' if length $s > $maxtrace;
|
|
if ($short) {
|
|
my $sub = @_ >= 4 ? $_[3] : $s;
|
|
print $fh "$sub[$i]{context}=$sub$args from $file:$sub[$i]{line}\n";
|
|
} else {
|
|
print $fh "$sub[$i]{context} = $s$args" .
|
|
" called from $file" .
|
|
" line $sub[$i]{line}\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
sub dump_trace {
|
|
my $skip = shift;
|
|
my $count = shift || 1e9;
|
|
$skip++;
|
|
$count += $skip;
|
|
my ($p,$file,$line,$sub,$h,$args,$e,$r,@a,@sub,$context);
|
|
my $nothard = not $frame & 8;
|
|
local $frame = 0; # Do not want to trace this.
|
|
my $otrace = $trace;
|
|
$trace = 0;
|
|
for ($i = $skip;
|
|
$i < $count and ($p,$file,$line,$sub,$h,$context,$e,$r) = caller($i);
|
|
$i++) {
|
|
@a = ();
|
|
for $arg (@args) {
|
|
my $type;
|
|
if (not defined $arg) {
|
|
push @a, "undef";
|
|
} elsif ($nothard and tied $arg) {
|
|
push @a, "tied";
|
|
} elsif ($nothard and $type = ref $arg) {
|
|
push @a, "ref($type)";
|
|
} else {
|
|
local $_ = "$arg"; # Safe to stringify now - should not call f().
|
|
s/([\'\\])/\\$1/g;
|
|
s/(.*)/'$1'/s
|
|
unless /^(?: -?[\d.]+ | \*[\w:]* )$/x;
|
|
s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg;
|
|
s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg;
|
|
push(@a, $_);
|
|
}
|
|
}
|
|
$context = $context ? '@' : (defined $context ? "\$" : '.');
|
|
$args = $h ? [@a] : undef;
|
|
$e =~ s/\n\s*\;\s*\Z// if $e;
|
|
$e =~ s/([\\\'])/\\$1/g if $e;
|
|
if ($r) {
|
|
$sub = "require '$e'";
|
|
} elsif (defined $r) {
|
|
$sub = "eval '$e'";
|
|
} elsif ($sub eq '(eval)') {
|
|
$sub = "eval {...}";
|
|
}
|
|
push(@sub, {context => $context, sub => $sub, args => $args,
|
|
file => $file, line => $line});
|
|
last if $signal;
|
|
}
|
|
$trace = $otrace;
|
|
@sub;
|
|
}
|
|
|
|
sub action {
|
|
my $action = shift;
|
|
while ($action =~ s/\\$//) {
|
|
#print $OUT "+ ";
|
|
#$action .= "\n";
|
|
$action .= &gets;
|
|
}
|
|
$action;
|
|
}
|
|
|
|
sub gets {
|
|
local($.);
|
|
#<IN>;
|
|
&readline("cont: ");
|
|
}
|
|
|
|
sub system {
|
|
# We save, change, then restore STDIN and STDOUT to avoid fork() since
|
|
# many non-Unix systems can do system() but have problems with fork().
|
|
open(SAVEIN,"<&STDIN") || &warn("Can't save STDIN");
|
|
open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT");
|
|
open(STDIN,"<&IN") || &warn("Can't redirect STDIN");
|
|
open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT");
|
|
system(@_);
|
|
open(STDIN,"<&SAVEIN") || &warn("Can't restore STDIN");
|
|
open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT");
|
|
close(SAVEIN); close(SAVEOUT);
|
|
&warn( "(Command returned ", ($?>>8) > 128 ? ($?>>8)-256 : ($?>>8), ")",
|
|
( $? & 128 ) ? " (core dumped)" : "",
|
|
( $? & 127 ) ? " (SIG ".($?&127).")" : "", "\n" ) if $?;
|
|
$?;
|
|
}
|
|
|
|
sub setterm {
|
|
local $frame = 0;
|
|
local $doret = -2;
|
|
local @stack = @stack; # Prevent growth by failing `use'.
|
|
eval { require Term::ReadLine } or die $@;
|
|
if ($notty) {
|
|
if ($tty) {
|
|
open(IN,"<$tty") or die "Cannot open TTY `$TTY' for read: $!";
|
|
open(OUT,">$tty") or die "Cannot open TTY `$TTY' for write: $!";
|
|
$IN = \*IN;
|
|
$OUT = \*OUT;
|
|
my $sel = select($OUT);
|
|
$| = 1;
|
|
select($sel);
|
|
} else {
|
|
eval "require Term::Rendezvous;" or die $@;
|
|
my $rv = $ENV{PERLDB_NOTTY} || "/tmp/perldbtty$$";
|
|
my $term_rv = new Term::Rendezvous $rv;
|
|
$IN = $term_rv->IN;
|
|
$OUT = $term_rv->OUT;
|
|
}
|
|
}
|
|
if (!$rl) {
|
|
$term = new Term::ReadLine::Stub 'perldb', $IN, $OUT;
|
|
} else {
|
|
$term = new Term::ReadLine 'perldb', $IN, $OUT;
|
|
|
|
$rl_attribs = $term->Attribs;
|
|
$rl_attribs->{basic_word_break_characters} .= '-:+/*,[])}'
|
|
if defined $rl_attribs->{basic_word_break_characters}
|
|
and index($rl_attribs->{basic_word_break_characters}, ":") == -1;
|
|
$rl_attribs->{special_prefixes} = '$@&%';
|
|
$rl_attribs->{completer_word_break_characters} .= '$@&%';
|
|
$rl_attribs->{completion_function} = \&db_complete;
|
|
}
|
|
$LINEINFO = $OUT unless defined $LINEINFO;
|
|
$lineinfo = $console unless defined $lineinfo;
|
|
$term->MinLine(2);
|
|
if ($term->Features->{setHistory} and "@hist" ne "?") {
|
|
$term->SetHistory(@hist);
|
|
}
|
|
ornaments($ornaments) if defined $ornaments;
|
|
$term_pid = $$;
|
|
}
|
|
|
|
sub resetterm { # We forked, so we need a different TTY
|
|
$term_pid = $$;
|
|
if (defined &get_fork_TTY) {
|
|
&get_fork_TTY;
|
|
} elsif (not defined $fork_TTY
|
|
and defined $ENV{TERM} and $ENV{TERM} eq 'xterm'
|
|
and defined $ENV{WINDOWID} and defined $ENV{DISPLAY}) {
|
|
# Possibly _inside_ XTERM
|
|
open XT, q[3>&1 xterm -title 'Forked Perl debugger' -e sh -c 'tty 1>&3;\
|
|
sleep 10000000' |];
|
|
$fork_TTY = <XT>;
|
|
chomp $fork_TTY;
|
|
}
|
|
if (defined $fork_TTY) {
|
|
TTY($fork_TTY);
|
|
undef $fork_TTY;
|
|
} else {
|
|
print_help(<<EOP);
|
|
I<#########> Forked, but do not know how to change a B<TTY>. I<#########>
|
|
Define B<\$DB::fork_TTY>
|
|
- or a function B<DB::get_fork_TTY()> which will set B<\$DB::fork_TTY>.
|
|
The value of B<\$DB::fork_TTY> should be the name of I<TTY> to use.
|
|
On I<UNIX>-like systems one can get the name of a I<TTY> for the given window
|
|
by typing B<tty>, and disconnect the I<shell> from I<TTY> by B<sleep 1000000>.
|
|
EOP
|
|
}
|
|
}
|
|
|
|
sub readline {
|
|
if (@typeahead) {
|
|
my $left = @typeahead;
|
|
my $got = shift @typeahead;
|
|
print $OUT "auto(-$left)", shift, $got, "\n";
|
|
$term->AddHistory($got)
|
|
if length($got) > 1 and defined $term->Features->{addHistory};
|
|
return $got;
|
|
}
|
|
local $frame = 0;
|
|
local $doret = -2;
|
|
$term->readline(@_);
|
|
}
|
|
|
|
sub dump_option {
|
|
my ($opt, $val)= @_;
|
|
$val = option_val($opt,'N/A');
|
|
$val =~ s/([\\\'])/\\$1/g;
|
|
printf $OUT "%20s = '%s'\n", $opt, $val;
|
|
}
|
|
|
|
sub option_val {
|
|
my ($opt, $default)= @_;
|
|
my $val;
|
|
if (defined $optionVars{$opt}
|
|
and defined $ {$optionVars{$opt}}) {
|
|
$val = $ {$optionVars{$opt}};
|
|
} elsif (defined $optionAction{$opt}
|
|
and defined &{$optionAction{$opt}}) {
|
|
$val = &{$optionAction{$opt}}();
|
|
} elsif (defined $optionAction{$opt}
|
|
and not defined $option{$opt}
|
|
or defined $optionVars{$opt}
|
|
and not defined $ {$optionVars{$opt}}) {
|
|
$val = $default;
|
|
} else {
|
|
$val = $option{$opt};
|
|
}
|
|
$val
|
|
}
|
|
|
|
sub parse_options {
|
|
local($_)= @_;
|
|
while ($_ ne "") {
|
|
s/^(\w+)(\s*$|\W)// or print($OUT "Invalid option `$_'\n"), last;
|
|
my ($opt,$sep) = ($1,$2);
|
|
my $val;
|
|
if ("?" eq $sep) {
|
|
print($OUT "Option query `$opt?' followed by non-space `$_'\n"), last
|
|
if /^\S/;
|
|
#&dump_option($opt);
|
|
} elsif ($sep !~ /\S/) {
|
|
$val = "1";
|
|
} elsif ($sep eq "=") {
|
|
s/^(\S*)($|\s+)//;
|
|
$val = $1;
|
|
} else { #{ to "let some poor schmuck bounce on the % key in B<vi>."
|
|
my ($end) = "\\" . substr( ")]>}$sep", index("([<{",$sep), 1 ); #}
|
|
s/^(([^\\$end]|\\[\\$end])*)$end($|\s+)// or
|
|
print($OUT "Unclosed option value `$opt$sep$_'\n"), last;
|
|
$val = $1;
|
|
$val =~ s/\\([\\$end])/$1/g;
|
|
}
|
|
my ($option);
|
|
my $matches =
|
|
grep( /^\Q$opt/ && ($option = $_), @options );
|
|
$matches = grep( /^\Q$opt/i && ($option = $_), @options )
|
|
unless $matches;
|
|
print $OUT "Unknown option `$opt'\n" unless $matches;
|
|
print $OUT "Ambiguous option `$opt'\n" if $matches > 1;
|
|
$option{$option} = $val if $matches == 1 and defined $val;
|
|
eval "local \$frame = 0; local \$doret = -2;
|
|
require '$optionRequire{$option}'"
|
|
if $matches == 1 and defined $optionRequire{$option} and defined $val;
|
|
$ {$optionVars{$option}} = $val
|
|
if $matches == 1
|
|
and defined $optionVars{$option} and defined $val;
|
|
& {$optionAction{$option}} ($val)
|
|
if $matches == 1
|
|
and defined $optionAction{$option}
|
|
and defined &{$optionAction{$option}} and defined $val;
|
|
&dump_option($option) if $matches == 1 && $OUT ne \*STDERR; # Not $rcfile
|
|
s/^\s+//;
|
|
}
|
|
}
|
|
|
|
sub set_list {
|
|
my ($stem,@list) = @_;
|
|
my $val;
|
|
$ENV{"$ {stem}_n"} = @list;
|
|
for $i (0 .. $#list) {
|
|
$val = $list[$i];
|
|
$val =~ s/\\/\\\\/g;
|
|
$val =~ s/([\0-\37\177\200-\377])/"\\0x" . unpack('H2',$1)/eg;
|
|
$ENV{"$ {stem}_$i"} = $val;
|
|
}
|
|
}
|
|
|
|
sub get_list {
|
|
my $stem = shift;
|
|
my @list;
|
|
my $n = delete $ENV{"$ {stem}_n"};
|
|
my $val;
|
|
for $i (0 .. $n - 1) {
|
|
$val = delete $ENV{"$ {stem}_$i"};
|
|
$val =~ s/\\((\\)|0x(..))/ $2 ? $2 : pack('H2', $3) /ge;
|
|
push @list, $val;
|
|
}
|
|
@list;
|
|
}
|
|
|
|
sub catch {
|
|
$signal = 1;
|
|
return; # Put nothing on the stack - malloc/free land!
|
|
}
|
|
|
|
sub warn {
|
|
my($msg)= join("",@_);
|
|
$msg .= ": $!\n" unless $msg =~ /\n$/;
|
|
print $OUT $msg;
|
|
}
|
|
|
|
sub TTY {
|
|
if (@_ and $term and $term->Features->{newTTY}) {
|
|
my ($in, $out) = shift;
|
|
if ($in =~ /,/) {
|
|
($in, $out) = split /,/, $in, 2;
|
|
} else {
|
|
$out = $in;
|
|
}
|
|
open IN, $in or die "cannot open `$in' for read: $!";
|
|
open OUT, ">$out" or die "cannot open `$out' for write: $!";
|
|
$term->newTTY(\*IN, \*OUT);
|
|
$IN = \*IN;
|
|
$OUT = \*OUT;
|
|
return $tty = $in;
|
|
} elsif ($term and @_) {
|
|
&warn("Too late to set TTY, enabled on next `R'!\n");
|
|
}
|
|
$tty = shift if @_;
|
|
$tty or $console;
|
|
}
|
|
|
|
sub noTTY {
|
|
if ($term) {
|
|
&warn("Too late to set noTTY, enabled on next `R'!\n") if @_;
|
|
}
|
|
$notty = shift if @_;
|
|
$notty;
|
|
}
|
|
|
|
sub ReadLine {
|
|
if ($term) {
|
|
&warn("Too late to set ReadLine, enabled on next `R'!\n") if @_;
|
|
}
|
|
$rl = shift if @_;
|
|
$rl;
|
|
}
|
|
|
|
sub tkRunning {
|
|
if ($ {$term->Features}{tkRunning}) {
|
|
return $term->tkRunning(@_);
|
|
} else {
|
|
print $OUT "tkRunning not supported by current ReadLine package.\n";
|
|
0;
|
|
}
|
|
}
|
|
|
|
sub NonStop {
|
|
if ($term) {
|
|
&warn("Too late to set up NonStop mode, enabled on next `R'!\n") if @_;
|
|
}
|
|
$runnonstop = shift if @_;
|
|
$runnonstop;
|
|
}
|
|
|
|
sub pager {
|
|
if (@_) {
|
|
$pager = shift;
|
|
$pager="|".$pager unless $pager =~ /^(\+?\>|\|)/;
|
|
}
|
|
$pager;
|
|
}
|
|
|
|
sub shellBang {
|
|
if (@_) {
|
|
$sh = quotemeta shift;
|
|
$sh .= "\\b" if $sh =~ /\w$/;
|
|
}
|
|
$psh = $sh;
|
|
$psh =~ s/\\b$//;
|
|
$psh =~ s/\\(.)/$1/g;
|
|
&sethelp;
|
|
$psh;
|
|
}
|
|
|
|
sub ornaments {
|
|
if (defined $term) {
|
|
local ($warnLevel,$dieLevel) = (0, 1);
|
|
return '' unless $term->Features->{ornaments};
|
|
eval { $term->ornaments(@_) } || '';
|
|
} else {
|
|
$ornaments = shift;
|
|
}
|
|
}
|
|
|
|
sub recallCommand {
|
|
if (@_) {
|
|
$rc = quotemeta shift;
|
|
$rc .= "\\b" if $rc =~ /\w$/;
|
|
}
|
|
$prc = $rc;
|
|
$prc =~ s/\\b$//;
|
|
$prc =~ s/\\(.)/$1/g;
|
|
&sethelp;
|
|
$prc;
|
|
}
|
|
|
|
sub LineInfo {
|
|
return $lineinfo unless @_;
|
|
$lineinfo = shift;
|
|
my $stream = ($lineinfo =~ /^(\+?\>|\|)/) ? $lineinfo : ">$lineinfo";
|
|
$emacs = ($stream =~ /^\|/);
|
|
open(LINEINFO, "$stream") || &warn("Cannot open `$stream' for write");
|
|
$LINEINFO = \*LINEINFO;
|
|
my $save = select($LINEINFO);
|
|
$| = 1;
|
|
select($save);
|
|
$lineinfo;
|
|
}
|
|
|
|
sub list_versions {
|
|
my %version;
|
|
my $file;
|
|
for (keys %INC) {
|
|
$file = $_;
|
|
s,\.p[lm]$,,i ;
|
|
s,/,::,g ;
|
|
s/^perl5db$/DB/;
|
|
s/^Term::ReadLine::readline$/readline/;
|
|
if (defined $ { $_ . '::VERSION' }) {
|
|
$version{$file} = "$ { $_ . '::VERSION' } from ";
|
|
}
|
|
$version{$file} .= $INC{$file};
|
|
}
|
|
do 'dumpvar.pl' unless defined &main::dumpValue;
|
|
if (defined &main::dumpValue) {
|
|
local $frame = 0;
|
|
&main::dumpValue(\%version);
|
|
} else {
|
|
print $OUT "dumpvar.pl not available.\n";
|
|
}
|
|
}
|
|
|
|
sub sethelp {
|
|
$help = "
|
|
B<T> Stack trace.
|
|
B<s> [I<expr>] Single step [in I<expr>].
|
|
B<n> [I<expr>] Next, steps over subroutine calls [in I<expr>].
|
|
<B<CR>> Repeat last B<n> or B<s> command.
|
|
B<r> Return from current subroutine.
|
|
B<c> [I<line>|I<sub>] Continue; optionally inserts a one-time-only breakpoint
|
|
at the specified position.
|
|
B<l> I<min>B<+>I<incr> List I<incr>+1 lines starting at I<min>.
|
|
B<l> I<min>B<->I<max> List lines I<min> through I<max>.
|
|
B<l> I<line> List single I<line>.
|
|
B<l> I<subname> List first window of lines from subroutine.
|
|
B<l> List next window of lines.
|
|
B<-> List previous window of lines.
|
|
B<w> [I<line>] List window around I<line>.
|
|
B<.> Return to the executed line.
|
|
B<f> I<filename> Switch to viewing I<filename>. Must be loaded.
|
|
B</>I<pattern>B</> Search forwards for I<pattern>; final B</> is optional.
|
|
B<?>I<pattern>B<?> Search backwards for I<pattern>; final B<?> is optional.
|
|
B<L> List all breakpoints and actions.
|
|
B<S> [[B<!>]I<pattern>] List subroutine names [not] matching I<pattern>.
|
|
B<t> Toggle trace mode.
|
|
B<t> I<expr> Trace through execution of I<expr>.
|
|
B<b> [I<line>] [I<condition>]
|
|
Set breakpoint; I<line> defaults to the current execution line;
|
|
I<condition> breaks if it evaluates to true, defaults to '1'.
|
|
B<b> I<subname> [I<condition>]
|
|
Set breakpoint at first line of subroutine.
|
|
B<b> B<load> I<filename> Set breakpoint on `require'ing the given file.
|
|
B<b> B<postpone> I<subname> [I<condition>]
|
|
Set breakpoint at first line of subroutine after
|
|
it is compiled.
|
|
B<b> B<compile> I<subname>
|
|
Stop after the subroutine is compiled.
|
|
B<d> [I<line>] Delete the breakpoint for I<line>.
|
|
B<D> Delete all breakpoints.
|
|
B<a> [I<line>] I<command>
|
|
Set an action to be done before the I<line> is executed.
|
|
Sequence is: check for breakpoint/watchpoint, print line
|
|
if necessary, do action, prompt user if necessary,
|
|
execute expression.
|
|
B<A> Delete all actions.
|
|
B<W> I<expr> Add a global watch-expression.
|
|
B<W> Delete all watch-expressions.
|
|
B<V> [I<pkg> [I<vars>]] List some (default all) variables in package (default current).
|
|
Use B<~>I<pattern> and B<!>I<pattern> for positive and negative regexps.
|
|
B<X> [I<vars>] Same as \"B<V> I<currentpackage> [I<vars>]\".
|
|
B<x> I<expr> Evals expression in array context, dumps the result.
|
|
B<m> I<expr> Evals expression in array context, prints methods callable
|
|
on the first element of the result.
|
|
B<m> I<class> Prints methods callable via the given class.
|
|
B<O> [I<opt>[B<=>I<val>]] [I<opt>B<\">I<val>B<\">] [I<opt>B<?>]...
|
|
Set or query values of options. I<val> defaults to 1. I<opt> can
|
|
be abbreviated. Several options can be listed.
|
|
I<recallCommand>, I<ShellBang>: chars used to recall command or spawn shell;
|
|
I<pager>: program for output of \"|cmd\";
|
|
I<tkRunning>: run Tk while prompting (with ReadLine);
|
|
I<signalLevel> I<warnLevel> I<dieLevel>: level of verbosity;
|
|
I<inhibit_exit> Allows stepping off the end of the script.
|
|
I<ImmediateStop> Debugger should stop as early as possible.
|
|
The following options affect what happens with B<V>, B<X>, and B<x> commands:
|
|
I<arrayDepth>, I<hashDepth>: print only first N elements ('' for all);
|
|
I<compactDump>, I<veryCompact>: change style of array and hash dump;
|
|
I<globPrint>: whether to print contents of globs;
|
|
I<DumpDBFiles>: dump arrays holding debugged files;
|
|
I<DumpPackages>: dump symbol tables of packages;
|
|
I<DumpReused>: dump contents of \"reused\" addresses;
|
|
I<quote>, I<HighBit>, I<undefPrint>: change style of string dump;
|
|
I<bareStringify>: Do not print the overload-stringified value;
|
|
Option I<PrintRet> affects printing of return value after B<r> command,
|
|
I<frame> affects printing messages on entry and exit from subroutines.
|
|
I<AutoTrace> affects printing messages on every possible breaking point.
|
|
I<maxTraceLen> gives maximal length of evals/args listed in stack trace.
|
|
I<ornaments> affects screen appearance of the command line.
|
|
During startup options are initialized from \$ENV{PERLDB_OPTS}.
|
|
You can put additional initialization options I<TTY>, I<noTTY>,
|
|
I<ReadLine>, and I<NonStop> there (or use `B<R>' after you set them).
|
|
B<<> I<expr> Define Perl command to run before each prompt.
|
|
B<<<> I<expr> Add to the list of Perl commands to run before each prompt.
|
|
B<>> I<expr> Define Perl command to run after each prompt.
|
|
B<>>B<>> I<expr> Add to the list of Perl commands to run after each prompt.
|
|
B<{> I<db_command> Define debugger command to run before each prompt.
|
|
B<{{> I<db_command> Add to the list of debugger commands to run before each prompt.
|
|
B<$prc> I<number> Redo a previous command (default previous command).
|
|
B<$prc> I<-number> Redo number'th-to-last command.
|
|
B<$prc> I<pattern> Redo last command that started with I<pattern>.
|
|
See 'B<O> I<recallCommand>' too.
|
|
B<$psh$psh> I<cmd> Run cmd in a subprocess (reads from DB::IN, writes to DB::OUT)"
|
|
. ( $rc eq $sh ? "" : "
|
|
B<$psh> [I<cmd>] Run I<cmd> in subshell (forces \"\$SHELL -c 'cmd'\")." ) . "
|
|
See 'B<O> I<shellBang>' too.
|
|
B<H> I<-number> Display last number commands (default all).
|
|
B<p> I<expr> Same as \"I<print {DB::OUT} expr>\" in current package.
|
|
B<|>I<dbcmd> Run debugger command, piping DB::OUT to current pager.
|
|
B<||>I<dbcmd> Same as B<|>I<dbcmd> but DB::OUT is temporarilly select()ed as well.
|
|
B<\=> [I<alias> I<value>] Define a command alias, or list current aliases.
|
|
I<command> Execute as a perl statement in current package.
|
|
B<v> Show versions of loaded modules.
|
|
B<R> Pure-man-restart of debugger, some of debugger state
|
|
and command-line options may be lost.
|
|
Currently the following setting are preserved:
|
|
history, breakpoints and actions, debugger B<O>ptions
|
|
and the following command-line options: I<-w>, I<-I>, I<-e>.
|
|
B<h> [I<db_command>] Get help [on a specific debugger command], enter B<|h> to page.
|
|
B<h h> Summary of debugger commands.
|
|
B<q> or B<^D> Quit. Set B<\$DB::finished = 0> to debug global destruction.
|
|
|
|
";
|
|
$summary = <<"END_SUM";
|
|
I<List/search source lines:> I<Control script execution:>
|
|
B<l> [I<ln>|I<sub>] List source code B<T> Stack trace
|
|
B<-> or B<.> List previous/current line B<s> [I<expr>] Single step [in expr]
|
|
B<w> [I<line>] List around line B<n> [I<expr>] Next, steps over subs
|
|
B<f> I<filename> View source in file <B<CR>> Repeat last B<n> or B<s>
|
|
B</>I<pattern>B</> B<?>I<patt>B<?> Search forw/backw B<r> Return from subroutine
|
|
B<v> Show versions of modules B<c> [I<ln>|I<sub>] Continue until position
|
|
I<Debugger controls:> B<L> List break/watch/actions
|
|
B<O> [...] Set debugger options B<t> [I<expr>] Toggle trace [trace expr]
|
|
B<<>[B<<>] or B<{>[B<{>] [I<cmd>] Do before prompt B<b> [I<ln>|I<event>] [I<cnd>] Set breakpoint
|
|
B<>>[B<>>] [I<cmd>] Do after prompt B<b> I<sub> [I<cnd>] Set breakpoint for sub
|
|
B<$prc> [I<N>|I<pat>] Redo a previous command B<d> [I<ln>] or B<D> Delete a/all breakpoints
|
|
B<H> [I<-num>] Display last num commands B<a> [I<ln>] I<cmd> Do cmd before line
|
|
B<=> [I<a> I<val>] Define/list an alias B<W> I<expr> Add a watch expression
|
|
B<h> [I<db_cmd>] Get help on command B<A> or B<W> Delete all actions/watch
|
|
B<|>[B<|>]I<dbcmd> Send output to pager B<$psh>\[B<$psh>\] I<syscmd> Run cmd in a subprocess
|
|
B<q> or B<^D> Quit B<R> Attempt a restart
|
|
I<Data Examination:> B<expr> Execute perl code, also see: B<s>,B<n>,B<t> I<expr>
|
|
B<x>|B<m> I<expr> Evals expr in array context, dumps the result or lists methods.
|
|
B<p> I<expr> Print expression (uses script's current package).
|
|
B<S> [[B<!>]I<pat>] List subroutine names [not] matching pattern
|
|
B<V> [I<Pk> [I<Vars>]] List Variables in Package. Vars can be ~pattern or !pattern.
|
|
B<X> [I<Vars>] Same as \"B<V> I<current_package> [I<Vars>]\".
|
|
END_SUM
|
|
# ')}}; # Fix balance of Emacs parsing
|
|
}
|
|
|
|
sub print_help {
|
|
my $message = shift;
|
|
if (@Term::ReadLine::TermCap::rl_term_set) {
|
|
$message =~ s/B<([^>]+|>)>/$Term::ReadLine::TermCap::rl_term_set[2]$1$Term::ReadLine::TermCap::rl_term_set[3]/g;
|
|
$message =~ s/I<([^>]+|>)>/$Term::ReadLine::TermCap::rl_term_set[0]$1$Term::ReadLine::TermCap::rl_term_set[1]/g;
|
|
}
|
|
print $OUT $message;
|
|
}
|
|
|
|
sub diesignal {
|
|
local $frame = 0;
|
|
local $doret = -2;
|
|
$SIG{'ABRT'} = 'DEFAULT';
|
|
kill 'ABRT', $$ if $panic++;
|
|
if (defined &Carp::longmess) {
|
|
local $SIG{__WARN__} = '';
|
|
local $Carp::CarpLevel = 2; # mydie + confess
|
|
&warn(Carp::longmess("Signal @_"));
|
|
}
|
|
else {
|
|
print $DB::OUT "Got signal @_\n";
|
|
}
|
|
kill 'ABRT', $$;
|
|
}
|
|
|
|
sub dbwarn {
|
|
local $frame = 0;
|
|
local $doret = -2;
|
|
local $SIG{__WARN__} = '';
|
|
local $SIG{__DIE__} = '';
|
|
eval { require Carp } if defined $^S; # If error/warning during compilation,
|
|
# require may be broken.
|
|
warn(@_, "\nCannot print stack trace, load with -MCarp option to see stack"),
|
|
return unless defined &Carp::longmess;
|
|
my ($mysingle,$mytrace) = ($single,$trace);
|
|
$single = 0; $trace = 0;
|
|
my $mess = Carp::longmess(@_);
|
|
($single,$trace) = ($mysingle,$mytrace);
|
|
&warn($mess);
|
|
}
|
|
|
|
sub dbdie {
|
|
local $frame = 0;
|
|
local $doret = -2;
|
|
local $SIG{__DIE__} = '';
|
|
local $SIG{__WARN__} = '';
|
|
my $i = 0; my $ineval = 0; my $sub;
|
|
if ($dieLevel > 2) {
|
|
local $SIG{__WARN__} = \&dbwarn;
|
|
&warn(@_); # Yell no matter what
|
|
return;
|
|
}
|
|
if ($dieLevel < 2) {
|
|
die @_ if $^S; # in eval propagate
|
|
}
|
|
eval { require Carp } if defined $^S; # If error/warning during compilation,
|
|
# require may be broken.
|
|
die(@_, "\nCannot print stack trace, load with -MCarp option to see stack")
|
|
unless defined &Carp::longmess;
|
|
# We do not want to debug this chunk (automatic disabling works
|
|
# inside DB::DB, but not in Carp).
|
|
my ($mysingle,$mytrace) = ($single,$trace);
|
|
$single = 0; $trace = 0;
|
|
my $mess = Carp::longmess(@_);
|
|
($single,$trace) = ($mysingle,$mytrace);
|
|
die $mess;
|
|
}
|
|
|
|
sub warnLevel {
|
|
if (@_) {
|
|
$prevwarn = $SIG{__WARN__} unless $warnLevel;
|
|
$warnLevel = shift;
|
|
if ($warnLevel) {
|
|
$SIG{__WARN__} = \&DB::dbwarn;
|
|
} else {
|
|
$SIG{__WARN__} = $prevwarn;
|
|
}
|
|
}
|
|
$warnLevel;
|
|
}
|
|
|
|
sub dieLevel {
|
|
if (@_) {
|
|
$prevdie = $SIG{__DIE__} unless $dieLevel;
|
|
$dieLevel = shift;
|
|
if ($dieLevel) {
|
|
$SIG{__DIE__} = \&DB::dbdie; # if $dieLevel < 2;
|
|
#$SIG{__DIE__} = \&DB::diehard if $dieLevel >= 2;
|
|
print $OUT "Stack dump during die enabled",
|
|
( $dieLevel == 1 ? " outside of evals" : ""), ".\n"
|
|
if $I_m_init;
|
|
print $OUT "Dump printed too.\n" if $dieLevel > 2;
|
|
} else {
|
|
$SIG{__DIE__} = $prevdie;
|
|
print $OUT "Default die handler restored.\n";
|
|
}
|
|
}
|
|
$dieLevel;
|
|
}
|
|
|
|
sub signalLevel {
|
|
if (@_) {
|
|
$prevsegv = $SIG{SEGV} unless $signalLevel;
|
|
$prevbus = $SIG{BUS} unless $signalLevel;
|
|
$signalLevel = shift;
|
|
if ($signalLevel) {
|
|
$SIG{SEGV} = \&DB::diesignal;
|
|
$SIG{BUS} = \&DB::diesignal;
|
|
} else {
|
|
$SIG{SEGV} = $prevsegv;
|
|
$SIG{BUS} = $prevbus;
|
|
}
|
|
}
|
|
$signalLevel;
|
|
}
|
|
|
|
sub find_sub {
|
|
my $subr = shift;
|
|
return unless defined &$subr;
|
|
$sub{$subr} or do {
|
|
$subr = \&$subr; # Hard reference
|
|
my $s;
|
|
for (keys %sub) {
|
|
$s = $_, last if $subr eq \&$_;
|
|
}
|
|
$sub{$s} if $s;
|
|
}
|
|
}
|
|
|
|
sub methods {
|
|
my $class = shift;
|
|
$class = ref $class if ref $class;
|
|
local %seen;
|
|
local %packs;
|
|
methods_via($class, '', 1);
|
|
methods_via('UNIVERSAL', 'UNIVERSAL', 0);
|
|
}
|
|
|
|
sub methods_via {
|
|
my $class = shift;
|
|
return if $packs{$class}++;
|
|
my $prefix = shift;
|
|
my $prepend = $prefix ? "via $prefix: " : '';
|
|
my $name;
|
|
for $name (grep {defined &{$ {"$ {class}::"}{$_}}}
|
|
sort keys %{"$ {class}::"}) {
|
|
next if $seen{ $name }++;
|
|
print $DB::OUT "$prepend$name\n";
|
|
}
|
|
return unless shift; # Recurse?
|
|
for $name (@{"$ {class}::ISA"}) {
|
|
$prepend = $prefix ? $prefix . " -> $name" : $name;
|
|
methods_via($name, $prepend, 1);
|
|
}
|
|
}
|
|
|
|
# The following BEGIN is very handy if debugger goes havoc, debugging debugger?
|
|
|
|
BEGIN { # This does not compile, alas.
|
|
$IN = \*STDIN; # For bugs before DB::OUT has been opened
|
|
$OUT = \*STDERR; # For errors before DB::OUT has been opened
|
|
$sh = '!';
|
|
$rc = ',';
|
|
@hist = ('?');
|
|
$deep = 100; # warning if stack gets this deep
|
|
$window = 10;
|
|
$preview = 3;
|
|
$sub = '';
|
|
$SIG{INT} = \&DB::catch;
|
|
# This may be enabled to debug debugger:
|
|
#$warnLevel = 1 unless defined $warnLevel;
|
|
#$dieLevel = 1 unless defined $dieLevel;
|
|
#$signalLevel = 1 unless defined $signalLevel;
|
|
|
|
$db_stop = 0; # Compiler warning
|
|
$db_stop = 1 << 30;
|
|
$level = 0; # Level of recursive debugging
|
|
# @stack and $doret are needed in sub sub, which is called for DB::postponed.
|
|
# Triggers bug (?) in perl is we postpone this until runtime:
|
|
@postponed = @stack = (0);
|
|
$doret = -2;
|
|
$frame = 0;
|
|
}
|
|
|
|
BEGIN {$^W = $ini_warn;} # Switch warnings back
|
|
|
|
#use Carp; # This did break, left for debuggin
|
|
|
|
sub db_complete {
|
|
# Specific code for b c l V m f O, &blah, $blah, @blah, %blah
|
|
my($text, $line, $start) = @_;
|
|
my ($itext, $search, $prefix, $pack) =
|
|
($text, "^\Q$ {'package'}::\E([^:]+)\$");
|
|
|
|
return sort grep /^\Q$text/, (keys %sub), qw(postpone load compile), # subroutines
|
|
(map { /$search/ ? ($1) : () } keys %sub)
|
|
if (substr $line, 0, $start) =~ /^\|*[blc]\s+((postpone|compile)\s+)?$/;
|
|
return sort grep /^\Q$text/, values %INC # files
|
|
if (substr $line, 0, $start) =~ /^\|*b\s+load\s+$/;
|
|
return sort map {($_, db_complete($_ . "::", "V ", 2))}
|
|
grep /^\Q$text/, map { /^(.*)::$/ ? ($1) : ()} keys %:: # top-packages
|
|
if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/ and $text =~ /^\w*$/;
|
|
return sort map {($_, db_complete($_ . "::", "V ", 2))}
|
|
grep !/^main::/,
|
|
grep /^\Q$text/, map { /^(.*)::$/ ? ($prefix . "::$1") : ()} keys %{$prefix . '::'}
|
|
# packages
|
|
if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/
|
|
and $text =~ /^(.*[^:])::?(\w*)$/ and $prefix = $1;
|
|
if ( $line =~ /^\|*f\s+(.*)/ ) { # Loaded files
|
|
# We may want to complete to (eval 9), so $text may be wrong
|
|
$prefix = length($1) - length($text);
|
|
$text = $1;
|
|
return sort
|
|
map {substr $_, 2 + $prefix} grep /^_<\Q$text/, (keys %main::), $0
|
|
}
|
|
if ((substr $text, 0, 1) eq '&') { # subroutines
|
|
$text = substr $text, 1;
|
|
$prefix = "&";
|
|
return sort map "$prefix$_",
|
|
grep /^\Q$text/,
|
|
(keys %sub),
|
|
(map { /$search/ ? ($1) : () }
|
|
keys %sub);
|
|
}
|
|
if ($text =~ /^[\$@%](.*)::(.*)/) { # symbols in a package
|
|
$pack = ($1 eq 'main' ? '' : $1) . '::';
|
|
$prefix = (substr $text, 0, 1) . $1 . '::';
|
|
$text = $2;
|
|
my @out
|
|
= map "$prefix$_", grep /^\Q$text/, grep /^_?[a-zA-Z]/, keys %$pack ;
|
|
if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) {
|
|
return db_complete($out[0], $line, $start);
|
|
}
|
|
return sort @out;
|
|
}
|
|
if ($text =~ /^[\$@%]/) { # symbols (in $package + packages in main)
|
|
$pack = ($package eq 'main' ? '' : $package) . '::';
|
|
$prefix = substr $text, 0, 1;
|
|
$text = substr $text, 1;
|
|
my @out = map "$prefix$_", grep /^\Q$text/,
|
|
(grep /^_?[a-zA-Z]/, keys %$pack),
|
|
( $pack eq '::' ? () : (grep /::$/, keys %::) ) ;
|
|
if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) {
|
|
return db_complete($out[0], $line, $start);
|
|
}
|
|
return sort @out;
|
|
}
|
|
if ((substr $line, 0, $start) =~ /^\|*O\b.*\s$/) { # Options after a space
|
|
my @out = grep /^\Q$text/, @options;
|
|
my $val = option_val($out[0], undef);
|
|
my $out = '? ';
|
|
if (not defined $val or $val =~ /[\n\r]/) {
|
|
# Can do nothing better
|
|
} elsif ($val =~ /\s/) {
|
|
my $found;
|
|
foreach $l (split //, qq/\"\'\#\|/) {
|
|
$out = "$l$val$l ", last if (index $val, $l) == -1;
|
|
}
|
|
} else {
|
|
$out = "=$val ";
|
|
}
|
|
# Default to value if one completion, to question if many
|
|
$rl_attribs->{completer_terminator_character} = (@out == 1 ? $out : '? ');
|
|
return sort @out;
|
|
}
|
|
return $term->filename_list($text); # filenames
|
|
}
|
|
|
|
sub end_report {
|
|
print $OUT "Use `q' to quit or `R' to restart. `h q' for details.\n"
|
|
}
|
|
|
|
END {
|
|
$finished = $inhibit_exit; # So that some keys may be disabled.
|
|
# Do not stop in at_exit() and destructors on exit:
|
|
$DB::single = !$exiting && !$runnonstop;
|
|
DB::fake::at_exit() unless $exiting or $runnonstop;
|
|
}
|
|
|
|
package DB::fake;
|
|
|
|
sub at_exit {
|
|
"Debugged program terminated. Use `q' to quit or `R' to restart.";
|
|
}
|
|
|
|
package DB; # Do not trace this 1; below!
|
|
|
|
1;
|